Vulnerability in asterisk

[ Description ]Official description

Asterisk is an open source private branch exchange and telephony toolkit. Prior to Asterisk 20.20.1, 21.12.3, 22.10.1, 23.4.1 and Certified Asterisk 20.7-cert11, 22.8-cert3, an authenticated attacker may crash Asterisk through a buffer over-read in the `PJSIP MWI body parser` by sending a carefully crafted `SIP NOTIFY` request. The attacker must pass SIP authentication using either a username/password or `source IP address matching`. This issue is fixed in Asterisk 20.20.1, 21.12.3, 22.10.1, 23.4.1 and Certified Asterisk 20.7-cert11, 22.8-cert3.

[ Fixes ]Fixes and patches

No fix or interim patch is linked from our sources yet. Check the vendor references below and limit exposure of affected systems until a fix is available.

[ References ]References

• github.com/asterisk/asterisk/commit/07aec894a1fdfa7fa989d3ab40fdf0dcda8005bb
• github.com/asterisk/asterisk/commit/1039bed76fa3248f58b6880e4b3f1421ef98b01f
• github.com/asterisk/asterisk/commit/1b2d99d8eb9206d37fd47115996f67fd28bd056f
• github.com/asterisk/asterisk/commit/3100a0d331affbf0995b8c57aaddb31cf3971f6e
• github.com/asterisk/asterisk/commit/57ce484a45b098de417f19265c95c64497782e36
• github.com/asterisk/asterisk/commit/919f2ffda03329c9014bedcb3c7789d38660c9ed
• github.com/asterisk/asterisk/commit/dafff9fb60281817225f1ce6371a5aa2fbb967a4
• github.com/asterisk/asterisk/releases/tag/20.20.1
• github.com/asterisk/asterisk/releases/tag/21.12.3
• github.com/asterisk/asterisk/releases/tag/22.10.1
• github.com/asterisk/asterisk/releases/tag/23.4.1
• github.com/asterisk/asterisk/releases/tag/certified-20.7-cert11
• github.com/asterisk/asterisk/releases/tag/certified-22.8-cert3
• github.com/asterisk/asterisk/security/advisories/GHSA-8jw3-ccr9-xrmf
• github.com/asterisk/asterisk/tree/24.0.0-pre1